Piston elevator buffer device

Abstract

Piston type elevator buffer device relates to an elevator buffer device. It is mainly designed to solve the problem of existing elevator buffer device which needs to set elevator shaft and pit. It includes cylinder, upper flange cover connected to upper end of cylinder, upper flange cover has upper air hole, lower flange cover connected to lower end of cylinder, lower flange cover has lower air hole; piston outer circle in cylinder has several grooves, support ring or sealing ring in groove; top wire from piston side wall groove into the fixed traction rope. The upper end of the traction rope extends from the upper air hole, and the lower end extends from the lower air hole. The piston top is fixed with a choke, and the traction rope passes through the middle of the piston and the choke. The cylinder is two or more, arranged on each side of the elevator box. The top of the cylinder is connected with the upper frame, the traction rope is fixed on the top of the elevator box after winding through the guide wheel of the upper frame, the bottom of the cylinder is connected with the lower frame, and the traction rope is connected at the bottom of the elevator box after winding through the guide wheel of the lower frame. The advantage is that it does not need to set elevator shaft and pit.

Description

Technical Field

[0001] This invention relates to the field of elevator equipment, and more specifically to an elevator buffer device. Background Technology

[0002] Currently, in most older residential communities across the country, buildings with seven floors or less do not have elevators installed, and these residents are mostly elderly. Residents living on the fourth floor or above hope to have elevators installed. However, most existing elevators require elevator shafts and pits for their safety features, which results in the elevator shafts blocking sunlight. In addition, the space in front of most apartment building units is too small to install elevators with elevator shafts and pits.

[0003] In addition, the complex structure of the existing elevator's buffer device makes the elevator expensive, which adds a great economic burden to the government and residents.

[0004] All of these factors contribute to the difficulty in installing elevators in older residential communities. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a piston elevator buffer device that is simple in structure, does not require electrical installations, elevator shafts and pits, and is safe and reliable.

[0006] The objective of this invention is achieved as follows: It includes a cylinder, with an upper flange cover bolted to the upper end of the cylinder. The upper flange cover has an upper vent hole in its center. A lower flange cover bolted to the lower end of the cylinder has a lower vent hole in its center. Inside the cylinder is a piston with several vertically arranged grooves on its outer circumference. One or more grooves contain support rings, while the remaining grooves contain sealing rings. The invention also includes a traction rope passing through the center of the piston. Several set screws extend from the grooves on the piston sidewall where the support rings are installed into the piston to secure the traction rope. The upper end of the traction rope extends from the upper vent hole of the upper flange cover, and the lower end extends from the lower vent hole of the lower flange cover.

[0007] A vent plug can also be fixed to the top of the piston. The vent plug has a hole in the middle for a traction rope to pass through. When the piston moves upward, the vent plug can block the upper vent hole on the upper flange cover.

[0008] The cylinder can be two or more. When there are two cylinders, they can be set on the left and right sides of the elevator; when there are multiple cylinders, they can be set on various sides around the elevator car.

[0009] Alternatively, an upper frame can be connected to the top of each cylinder on the side of the elevator car. Guide wheels are installed on the upper frame. The traction rope is fixed to the top of the elevator car after passing around the guide wheels of the upper frame. A lower frame is connected to the bottom of the cylinder on the side of the elevator car. Guide wheels are installed on the lower frame. The lower end of the traction rope extends from the lower vent of the lower flange cover, passes around the guide wheels on the lower frame, and is connected to the bottom of the elevator car.

[0010] The advantages of this invention are: when an elevator suddenly falls and the elevator car descends rapidly, this device can effectively dampen the descent speed of the elevator car, achieving a slow and safe landing. Because this buffer device eliminates the need for an elevator shaft and pit, it omits complex structures and reduces costs by approximately 70%. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the main structure of the present invention; Figure 2 This is a schematic diagram showing the connection status between the present invention and the elevator car. Detailed Implementation

[0012] The following is combined Figure 1 and Figure 2 The present invention will be further described; Reference Figure 1 It includes a cylinder 1, with an upper flange cover 2 bolted to the upper end of the cylinder. The upper flange cover has an upper vent hole 4 in the middle. The lower end of the cylinder is bolted to a lower flange cover 3, with a lower vent hole 5 in the middle. Inside the cylinder is a piston 6, with several vertically arranged grooves on the outer circumference of the piston. One or more grooves are fitted with support rings 7, and the remaining grooves are fitted with sealing rings 8. It also includes a traction rope 9, which passes through the middle of the piston. Several set screws 10 extend from the grooves on the piston sidewall where the support rings are installed into the piston to fix the traction rope. The upper end of the traction rope extends out from the upper vent hole of the upper flange cover, and the lower end of the traction rope extends out from the lower vent hole of the lower flange cover.

[0013] A vent plug 11 can also be fixed to the top of the piston. The vent plug has a hole in the middle for a traction rope to pass through. When the piston moves upward, the vent plug can block the upper vent hole on the upper flange cover.

[0014] Reference Figure 2 The cylinder can be two or more. When there are two cylinders, they can be set on the left and right sides of the elevator; when there are multiple cylinders, they can be set on various sides around the elevator car.

[0015] The upper frame 12 can also be connected to the top of these cylinders on the side of the elevator car 13. The upper frame is equipped with guide wheels. The traction rope extending from the upper vent of the upper flange cover passes through the guide wheels of the upper frame and is fixed to the top of the elevator car. The lower frame 14 is connected to the bottom of these cylinders on the side of the elevator car. The lower frame is equipped with guide wheels. The traction rope extending from the lower vent of the lower flange cover passes through the guide wheels on the lower frame and is connected to the bottom of the elevator car.

[0016] When in use, vertical guide rails can be installed on the side of each cylinder facing the elevator car, and guide wheels can be installed on the two sides of the elevator car. The guide wheels on the two sides of the elevator car are placed inside the guide rails on the cylinders.

[0017] As the elevator car rises and falls, the traction piston slides up and down. When the elevator car suddenly falls, its own weight accelerates the descent. The piston's rapid sliding creates air pressure expansion within the cylinder, causing it to decelerate and achieve a slow descent. As the elevator car approaches the ground, the airlock gradually blocks the vent, causing the car to land even more slowly on its second landing.

[0018] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A piston-type elevator buffer device, characterized in that: The cylinder includes a cylinder (1), with an upper flange cover (2) bolted to the upper end of the cylinder and an upper vent hole (4) in the middle of the upper flange cover. The lower flange cover (3) bolted to the lower end of the cylinder and a lower vent hole (5) in the middle of the lower flange cover. The cylinder contains a piston (6), with several grooves arranged vertically on the outer circumference of the piston. One or more grooves are fitted with support rings (7), and the remaining grooves are fitted with sealing rings (8). The cylinder also includes a traction rope (9), which passes through the middle of the piston. Several set screws (10) extend from the grooves on the side wall of the piston where the support rings are installed into the piston to fix the traction rope. The upper end of the traction rope extends from the upper vent hole of the upper flange cover, and the lower end of the traction rope extends from the lower vent hole of the lower flange cover. A vent plug (11) is fixed on the top of the piston. The vent plug has a hole in the middle for the traction rope to pass through. The traction rope passes through the hole in the middle of the vent plug. The upper frame (12) is connected to the top of the two cylinders on the side of the elevator car (13). The upper frame is equipped with guide wheels. The traction rope extending from the upper vent of the upper flange cover passes through the guide wheels of the upper frame and is fixed to the top of the elevator car. The lower frame (14) is connected to the bottom of the two cylinders on the side of the elevator car. The lower frame is equipped with guide wheels. The traction rope extending from the lower vent of the lower flange cover passes through the guide wheels on the lower frame and is connected to the bottom of the elevator car.

2. The piston-type elevator buffer device according to claim 1, characterized in that: There are two cylinders, which are respectively located on the left and right sides of the elevator.

3. The piston-type elevator buffer device according to claim 1, characterized in that: The cylinders are multiple and are respectively installed on various sides around the elevator car.

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